Photoluminescence of rhodamine 6G in plasmonic field of Au nanoparticles: Temperature effects

Journal of Applied Physics

Bondarchuk

Losytskyy

2014

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Anomalous temperature dependence of surface plasmon enhanced photoluminescence from copper nanoparticles embedded in a silica host matrix has been observed. The quantum yield of photoluminescence increases as the temperature increases. The key role of such an effect is the interplay between the surface plasmon resonance and the interband transitions in the copper nanoparticles occurring at change of the temperature. Namely, the increase of temperature leads to the red shift of the resonance. The shift leads to increase of the spectral overlap of the resonance with photoluminescence band of copper as well as to the decrease of plasmon damping caused by interband transitions. Such mechanisms lead to the increase of surface plasmon enhancement factor and, consequently, to increase of the quantum yield of the photoluminescence. V C 2014 AIP Publishing LLC. [http://dx.

Section: Discussionmentioning

confidence: 71%

Surface plasmon enhanced photoluminescence from copper nanoparticles: Influence of temperature

Journal of Applied Physics

Bondarchuk

Losytskyy

2014

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“…It would be interesting to examine the effect of temperature dependence on the quantum yield of PL from an object external to the metal NP. Recently, we observed the strong temperature dependence of the intensity of PL from rhodamine 6G [80] and fullerene C 60 [81], molecules which are located in the vicinity of Au NPs. This effect is due to the temperature dependence of the plasmonic local field correction factor in metal NPs described by a model similar to the one considered in the review.…”

Section: Comparative Analysis and Discussion Of The Temperature Depenmentioning

confidence: 99%

Thermo-Optical Effects in Plasmonic Metal Nanostructures

Pinchuk

2021

Ukr. J. Phys.

The effects of the temperature on the surface plasmon resonance (SPR) in noble metal nanoparticles at various temperatures ranging from 77 to 1190 K are reviewed. A temperature increase results in an appreciable red shift and leads to a broadening of the SPR in the nanoparticles (NPs). This observed thermal expansion along with an increase in the electron-phonon scattering rate with rising temperature emerge as the dominant physical mechanisms producing the red shift and broadening of the SPR. Strong temperature dependence of surface plasmon enhanced photoluminescence from silver (Ag) and copper (Cu) NPs is observed. The quantum photoluminescence yield of Ag nanoparticles decreases as the temperature increases, due to a decrease in the plasmon enhancement resulting from an increase in the electron-phonon scattering rate. An anomalous temperature dependence of the photoluminescence from Cu nanoparticles was also observed; the quantum yield of photoluminescence increases with the temperature. The interplay between the SPR and the interband transitions plays a critical role in this effect. The surface-plasmon involved laser heating of a dense 2D layer of gold (Au) NPs and of Au NPs in water colloids is also examined. A strong increase in the Au NP temperature occurs, when the laser frequency approaches the SPR. This finding supports the resonant plasmonic character of the laser heating of metal NPs. The sharp blue shift of the surface plasmon resonance in colloidal Au NPs at temperatures exceeding the water boiling point indicates the vapor-bubble formation near the surface of the NPs.

“…The rate of electron-electron scattering c eÀe is temperature independent with the high accuracy. 11,49 The rate of surface scattering of the free electrons is size dependent 37,38 as…”

Section: Discussionmentioning

confidence: 99%

“…Surface plasmons (SPs) give rise to the enhancement of the local electric field close to the surface of metal nanoparticles. Such strong local electric field enhances the optical processes such as surface enhanced Raman scattering (SERS) [4][5][6] and surface enhanced photoluminescence (SEPL), [7][8][9][10][11] etc., in molecules and clusters functionalized on the surface of metal nanoparticles or close to a rough metal surface. The metal nanoparticle couples to the molecule through the plasmonic field.…”

mentioning

confidence: 99%

“…Recently, we have reported the influence of temperature on plasmon enhanced PL from silver 30 and copper 31 NPs, as well as PL from rhodamine 6 G dye deposited on Au NPs array. 11 In present work, we use the PL of C 60 fullerene film deposited on 2D array of gold NPs as a sensor of temperature influence on the magnitude of the plasmonic field in the vicinity of Au NPs. The field magnitude determines the plasmonic enhancement factor of C 60 PL.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Sensing the temperature influence on plasmonic field of metal nanoparticles by photoluminescence of fullerene C60 in layered C60/Au system

Journal of Applied Physics

Bondarchuk

Kozachenko

et al. 2015

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